ClickHouse/dbms/src/AggregateFunctions/AggregateFunctionRetention.cpp
2018-08-23 03:49:18 +03:00

34 lines
1.0 KiB
C++

#include <AggregateFunctions/AggregateFunctionFactory.h>
#include <AggregateFunctions/AggregateFunctionRetention.h>
#include <AggregateFunctions/Helpers.h>
#include <AggregateFunctions/FactoryHelpers.h>
namespace DB
{
namespace
{
AggregateFunctionPtr createAggregateFunctionRetention(const std::string & name, const DataTypes & arguments, const Array & params)
{
assertNoParameters(name, params);
if (arguments.size() < 2)
throw Exception("Not enough event arguments for aggregate function " + name, ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
if (arguments.size() > AggregateFunctionRetentionData::max_events)
throw Exception("Too many event arguments for aggregate function " + name, ErrorCodes::NUMBER_OF_ARGUMENTS_DOESNT_MATCH);
return std::make_shared<AggregateFunctionRetention>(arguments);
}
}
void registerAggregateFunctionRetention(AggregateFunctionFactory & factory)
{
factory.registerFunction("retention", createAggregateFunctionRetention, AggregateFunctionFactory::CaseInsensitive);
}
}